CN101446524B - Heat exchanger performance testing device for air conditioning - Google Patents

Heat exchanger performance testing device for air conditioning Download PDF

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Publication number
CN101446524B
CN101446524B CN2008102443051A CN200810244305A CN101446524B CN 101446524 B CN101446524 B CN 101446524B CN 2008102443051 A CN2008102443051 A CN 2008102443051A CN 200810244305 A CN200810244305 A CN 200810244305A CN 101446524 B CN101446524 B CN 101446524B
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point
communicated
evaporator
condenser
outlet
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CN101446524A (en
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张秀平
田旭东
岳海兵
周全
许敬德
郑传经
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Hefei General Environment Control Technology Co., Ltd.
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Hefei General Environment Control Technology Co Ltd
Hefei General Machinery Research Institute Co Ltd
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Abstract

The invention relates to a heat exchanger performance testing device for air conditioning. The device solves the problems of high cost of performance test and complex testing process of the prior heatexchanger for air conditioning. The device comprises two refrigeration compressors connected in parallel, the outlets of the two refrigeration compressors are communicated with a condenser, the condenser is communicated with a subcooler, the subcooler is connected with a heater, an evaporator is connected at the other end of the heater, and the evaporator is communicated with the inlets of the two refrigeration compressors connected in parallel; regulating valves are connected on the two refrigeration compressors connected in parallel in parallel; exhaust temperature measuring points and exhaust pressure measuring points are arranged at the outlets of the two refrigeration compressors connected in parallel, and suction temperature measuring points and suction pressure measuring points forthe refrigeration compressors are arranged at the inlets of the two refrigeration compressors connected in parallel; and temperature and pressure measuring points are also respectively arranged on other pipelines. The invention has the advantages that firstly, the wide-range stepless regulation for the capacity of the tested heat exchanger is realized, and the electric control is easy to realize;and secondly, the capacity of the tested heat exchanger can be adjusted within a small range.

Description

Heat exchanger performance testing device for air conditioning
Technical field
The present invention relates to heat exchanger performance testing device for air conditioning.
Background technology
Artificial atmosphere with heat interchanger (hereinafter to be referred as: machine) be a kind of parts by factory-assembled, cold-producing medium is in a side flow of pipe, the device that carries out heat exchange with pipe opposite side flow air (or water).When air (or water) passed through these parts, air (or water) and cold-producing medium carried out heat exchange.Machine is used for the condenser and the evaporator of air-conditioning mostly.Performance test for this kind machine, usually adopted following method in the past: as test evaporator, then according to by the heat of the design of try engine or estimation, the compressor of apolegamy capacity suitable, condenser and throttling valve member and important pipeline and valve member such as oil separator, gas-liquid separator, filtrator etc., typical refrigerated air-conditioning system completes a set, this might cause corresponding each by try engine, all will be equipped with special cover parts and an equipment, this will improve the cost and the complexity of test greatly.In test process, because the capacity of compressor is fixed, so cannot be regulated by the capacity of try engine, the ability that depends on compressor fully, the regulating working conditions narrow range, and also capacity is discontinuous, be not easy to the test of development, comprise that in addition electrical equipment and control system also can't be integrated, for measuring unit brings the testing cost height, problems such as experimentation complexity.
Summary of the invention
In order to solve the problem of following three aspects, the first, capacity can not join continuous the adjusting, makes performance test apparatus can test the air-condition heat exchanger (evaporator and condenser) of certain span; The second, the integration problem of solution control and electric system; The 3rd, reduce the cost of proving installation significantly; The invention provides a kind of cost heat exchanger performance testing device for air conditioning low, simple in structure.
Structural design scheme of the present invention is such,
Heat exchanger performance testing device for air conditioning comprises refrigeration compressor, condenser, evaporator and well heater;
The outlet of the refrigeration compressor 1 of two parallel connections is being communicated with the import of condenser 7 by pipeline, the outlet of condenser 7 is being communicated with the import of subcooler 9, the outlet of subcooler is being communicated with well heater B8, the other end of well heater B8 is being communicated with the import of evaporator 34, and the outlet of evaporator 34 is being communicated with the import of the refrigeration compressor 1 of two parallel connections;
Variable valve A6 in parallel on the refrigeration compressor 1 of two parallel connections;
The outlet of the refrigeration compressor 1 of two parallel connections is provided with delivery temperature measuring point 2 and discharge pressure measuring point 3, and its inflow point is provided with refrigeration compressor air suction temperature point 32 and refrigeration compressor air suction pressure-measuring-point 33;
The other end of well heater B8 is provided with liquid line upstream pressure measuring point 31 and the preceding temperature point 30 of liquid line valve;
The inflow point of evaporator 34 is provided with stop valve F29 and main line throttling valve 27;
Test pipeline one end of evaporator test branch road is being communicated with main line throttling valve 27 inflow points, and the other end is being communicated with the exit of evaporator 34; Be provided with stop valve E25, rapid-acting coupling A10, heat interchanger inlet temperature measuring point 11, heat interchanger intake pressure measuring point 12, stop valve B13, throttle point temperature point 14 and throttle point pressure-measuring-point 15 successively on the inlet pipeline of evaporator test branch road, and variable valve B16 in stop valve B13 parallel connection; Be provided with heat exchanger exit pressure-measuring-point 18, heat exchanger outlet temperature measuring point 19, rapid-acting coupling B20, stop valve D24 and gas meter 28 successively on the outlet conduit of evaporator test branch road;
Test pipeline one end of condenser test branch road is being communicated with the inflow point of condenser 7, and the other end is being communicated with the exit of main line throttling valve 27; Be provided with stop valve A4 and well heater A5 successively on the inlet pipeline of condenser test branch road, and be communicated with the import of rapid-acting coupling A10; Be provided with variable valve C26, flowmeter 23, liquid-sighting glass 22, shutoff valve C 21 successively on the outlet conduit of condenser test branch road, and be communicated with the outlet of rapid-acting coupling B20.
Air-condition heat exchanger performance test apparatus of the present invention (refrigerant side) mainly is to test at the heat interchanger that designs for air conditioning condition.Wherein heat interchanger is divided into condenser and evaporator, and condenser needs after cold-producing medium and air (or water) heat exchange certain degree of supercooling to be arranged, and evaporator needs after the heat exchange certain degree of superheat is arranged.This test will be controlled the operating point of the import and export of heat interchanger, simultaneously, according to the difference of set heat exchange amount, requires testing table that the function of pondage is arranged, and can reach certain span during test.In existing test unit, multiple compressors in parallel, adopted auxiliary condenser and evaporator simultaneously, flow with the shunting compressor, can realize the step-less adjustment of tested heat exchanger flow, the shunting of supplementary heat exchanger is as the mode of the interior on a large scale tested heat interchanger capacity of adjusting, and the present invention adopts the design proposal that is connected variable valve between gas outlet and air intake duct, can play the effect of among a small circle, regulating tested heat exchanger flow, the present invention can directly measure by by the refrigerant flow of try engine, can be for heat interchanger by measuring the temperature and pressure of import superheated refrigerant as condenser, the pressure and temperature of exit cold-producing medium supercooled liquid is determined the heat of refrigerant side.For the heat interchanger that is used for evaporator, can export the pressure and temperature of overheated gas by measuring throttling preceding liquid pipe pressure and temperature, calculate the heat of refrigerant side again in conjunction with refrigerant flow.
Useful technique effect of the present invention is:
1, Bing Lian refrigeration compressor and supplementary heat exchanger and system flow have been realized the artificial atmosphere of 3~5 times of ranges of capacity is used the test of heat interchanger, and have been easy to realize electrical equipment control.
2, in a test unit, satisfy the test of evaporator and condenser simultaneously.
3, the variable valve A6 between gas outlet and the air intake duct can regulate the capacity of tested heat interchanger among a small circle.
4, the present invention has compared with prior art solved the difficult problem in test preparatory period long (1~February), finishes test and prepare to begin to test in the short time (1~2 day), and then reduced testing cost.
Description of drawings
Fig. 1 is a structural representation of the present invention,
Fig. 2 is the synoptic diagram when being used for the evaporator test,
Fig. 3 is the synoptic diagram when being used for the condenser test.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described by embodiment.
Embodiment 1:
Referring to Fig. 1, heat exchanger performance testing device for air conditioning comprises refrigeration compressor 1, condenser 7, evaporator 34 and the well heater of two parallel connections;
The outlet of the refrigeration compressor 1 of two parallel connections is being communicated with the import of condenser 7 by pipeline, the outlet of condenser 7 is being communicated with the import of subcooler 9, the outlet of subcooler is being communicated with well heater B8, the other end of well heater B8 is being communicated with the import of evaporator 34, and the outlet of evaporator 34 is being communicated with the import of the refrigeration compressor 1 of two parallel connections;
Variable valve A6 in parallel on the refrigeration compressor 1 of two parallel connections;
The outlet of the refrigeration compressor 1 of two parallel connections is provided with delivery temperature measuring point 2 and discharge pressure measuring point 3, and its inflow point is provided with refrigeration compressor air suction temperature point 32 and refrigeration compressor air suction pressure-measuring-point 33;
The other end of well heater B8 is provided with liquid line upstream pressure measuring point 31 and the preceding temperature point 30 of liquid line valve;
The inflow point of evaporator 34 is provided with stop valve F29 and main line throttling valve 27;
Test pipeline one end of evaporator test branch road is being communicated with main line throttling valve 27 inflow points, and the other end is being communicated with the exit of evaporator 34; Be provided with stop valve E25, rapid-acting coupling A10, heat interchanger inlet temperature measuring point 11, heat interchanger intake pressure measuring point 12, stop valve B13, throttle point temperature point 14 and throttle point pressure-measuring-point 15 successively on the inlet pipeline of evaporator test branch road, and variable valve B16 in stop valve B13 parallel connection; Be provided with heat exchanger exit pressure-measuring-point 18, heat exchanger outlet temperature measuring point 19, rapid-acting coupling B20, stop valve D24 and gas meter 28 successively on the outlet conduit of evaporator test branch road;
Test pipeline one end of condenser test branch road is being communicated with the inflow point of condenser 7, and the other end is being communicated with the exit of main line throttling valve 27; Be provided with stop valve A4 and well heater A5 successively on the inlet pipeline of condenser test branch road, and be communicated with the import of rapid-acting coupling A10; Be provided with variable valve C26, flowmeter 23, liquid-sighting glass 22, shutoff valve C 21 successively on the outlet conduit of condenser test branch road, and be communicated with the outlet of rapid-acting coupling B20.
When carrying out the evaporator test, see Fig. 2; Main measurement point is: pressure-measuring-point 15, heat exchanger exit pressure-measuring-point 18, heat exchanger outlet temperature measuring point 19, gas flow measurement meter 28 after temperature point 14, the throttling after delivery temperature measuring point 2, discharge pressure measuring point 3, compressor air suction temperature point 32, compressor air suction pressure-measuring-point 33, heat interchanger inlet temperature measuring point 11, heat interchanger intake pressure measuring point 12, the throttling; Poor [heat interchanger inlet temperature measuring point 11, heat interchanger intake pressure measuring point 12 and heat exchanger exit pressure-measuring-point 18, the heat exchanger outlet temperature measuring point 19] of the enthalpy by calculating refrigerant side before the machine throttling valve and the enthalpy of its outlet calculates refrigerating capacity with the product of measured flow under discharge state, after the throttling after temperature point 14, the throttling pressure-measuring-point 15 be mainly used in refrigerant condition after the monitoring throttling.
When carrying out the condenser test, see Fig. 3; Main measurement point is: delivery temperature measuring point 2, discharge pressure measuring point 3, compressor air suction temperature point 32, compressor air suction pressure-measuring-point 33, heat interchanger inlet temperature measuring point 11, heat interchanger intake pressure measuring point 12, heat exchanger exit pressure-measuring-point 18, heat exchanger outlet temperature measuring point 19, liquid flow measurement meter 23; The product of the enthalpy difference [heat interchanger inlet temperature measuring point 11, heat interchanger intake pressure measuring point 12 and heat exchanger exit pressure-measuring-point 18, heat exchanger outlet temperature measuring point 19] of the import and export by calculating the machine refrigerant side and measured flow under discharge state calculates refrigerating capacity.
During machine testing, earlier heat interchanger inlet temperature measuring point 11, heat interchanger intake pressure measuring point 12, stop valve B13 parallel connection pressure-measuring-point 15 after temperature point 14 after variable valve B16, the throttling, the throttling, connected by try engine 17, heat exchanger exit pressure-measuring-point 18, heat exchanger outlet temperature measuring point 19 and make, be connected with rapid-acting coupling B20 with rapid-acting coupling A10 then and get final product, see Fig. 1.

Claims (1)

1. heat exchanger performance testing device for air conditioning comprises refrigeration compressor, condenser, evaporator and well heater, it is characterized in that:
The outlet of the refrigeration compressor of two parallel connections (1) is being communicated with the import of condenser (7) by pipeline, the outlet of condenser (7) is being communicated with the import of subcooler (9), the outlet of subcooler is being communicated with well heater B (8), the other end of well heater B (8) is being communicated with the import of evaporator (34), and the outlet of evaporator (34) is being communicated with the import of the refrigeration compressor (1) of two parallel connections;
The refrigeration compressor of two parallel connections (1) is gone up variable valve A (6) in parallel;
The outlet of the refrigeration compressor of two parallel connections (1) is provided with delivery temperature measuring point (2) and discharge pressure measuring point (3), and its inflow point is provided with refrigeration compressor air suction temperature point (32) and refrigeration compressor air suction pressure-measuring-point (33);
The other end of well heater B (8) is provided with liquid line upstream pressure measuring point (31) and the preceding temperature point (30) of liquid line valve;
The inflow point of evaporator (34) is provided with stop valve F (29) and main line throttling valve (27);
Test pipeline one end of evaporator test branch road is being communicated with main line throttling valve (27) inflow point, and the other end is being communicated with the exit of evaporator (34); Be provided with stop valve E (25), rapid-acting coupling A (10), heat interchanger inlet temperature measuring point (11), heat interchanger intake pressure measuring point (12), stop valve B (13), throttle point temperature point (14) and throttle point pressure-measuring-point (15) successively on the inlet pipeline of evaporator test branch road, and stop valve B (13) parallel connection variable valve B (16); Be provided with heat exchanger exit pressure-measuring-point (18), heat exchanger outlet temperature measuring point (19), rapid-acting coupling B (20), stop valve D (24) and gas meter (28) successively on the outlet conduit of evaporator test branch road;
Test pipeline one end of condenser test branch road is being communicated with the inflow point of condenser (7), and the other end is being communicated with the exit of main line throttling valve (27); Be provided with stop valve A (4) and well heater A (5) successively on the inlet pipeline of condenser test branch road, and be communicated with the import of rapid-acting coupling A (10); Be provided with variable valve C (26), flowmeter (23), liquid-sighting glass (22), shutoff valve C (21) successively on the outlet conduit of condenser test branch road, and be communicated with the outlet of rapid-acting coupling B (20).
CN2008102443051A 2008-11-21 2008-11-21 Heat exchanger performance testing device for air conditioning Active CN101446524B (en)

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CN102175351B (en) * 2011-03-11 2012-09-19 合肥通用机械研究院 Device for testing thermal performance and fluid resistance of liquid-liquid heat exchanger
CN102768127B (en) * 2012-08-09 2014-11-05 上海贝洱热系统有限公司 Method and device for detecting low voltage heater of automobile air conditioner
CN103852275A (en) * 2012-11-29 2014-06-11 浙江海得新能源有限公司 Heat exchange efficiency test platform and test method of air-water heat exchanger
CN103033356B (en) * 2012-12-28 2015-08-19 上海佐竹冷热控制技术有限公司 The Performance Test System of coaxial heat exchanger and method of testing in air conditioning for automobiles
CN103645207B (en) * 2013-11-25 2016-06-22 乐金空调(山东)有限公司 Heat exchanger tube heat exchange property test device
CN104390803B (en) * 2014-12-11 2017-01-11 青岛大学 Refrigerant supply device for refrigerator heat exchanger performance test system and test method
CN105606644B (en) * 2016-01-11 2018-06-29 合肥通用机械研究院 All working condition high precision heat exchange single tube performance test apparatus
CN110068175A (en) * 2018-01-24 2019-07-30 温岭市三泉冷却设备有限公司 A kind of cooling device of large size heat-producing device
CN109030055A (en) * 2018-08-24 2018-12-18 上海佐竹冷热控制技术有限公司 CO2Air-conditioning heat exchanger Performance Test System and its test method
CN110082094A (en) * 2019-05-29 2019-08-02 天津商业大学 The shunting performance testing experimental system not influenced by the non-homogeneous heat exchange in downstream
CN111610042B (en) * 2020-04-21 2021-12-14 合肥通用机械研究院有限公司 Performance test system of high-parameter monatomic working medium equipment
CN112504707B (en) * 2020-11-17 2023-06-13 中广核工程有限公司 Method for evaluating performance of heat exchanger of ventilation system, electronic equipment and storage medium
CN114486994B (en) * 2021-12-30 2023-12-05 合肥通用机械研究院有限公司 Auxiliary module of evaporator and freezing test stand of evaporator
CN114353363B (en) * 2022-03-10 2022-05-17 中国空气动力研究与发展中心低速空气动力研究所 Icing wind tunnel heat exchanger outlet airflow temperature control system and method

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